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US Patent: 4,968X
Excavator
Patentee: Harvey W. Campbell (exact or similar names) - Lockport, Niagara County, NY USPTO Classifications: 37/342 Tool Categories: construction machines : excavators Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Jan. 22, 1828 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Listed in A List of Patents for Inventions and Designs, from 1790 to 1847, 1847, pgs. 196 & 311. Most of the patents prior to 1836 were lost in the Dec. 1836 Patent Office fire. Only about 2000 of the almost 10000 documents were recovered. Little is known about this patent. Only the patent drawing is available. This patent is in the database for reference only.

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